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<?php |
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namespace Mpociot\VatCalculator; |
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use Illuminate\Contracts\Config\Repository; |
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use Mpociot\VatCalculator\Exceptions\VATCheckUnavailableException; |
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use SoapClient; |
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class VatCalculator |
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{ |
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/** |
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* VAT Service check URL provided by the EU. |
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*/ |
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const VAT_SERVICE_URL = 'http://ec.europa.eu/taxation_customs/vies/checkVatService.wsdl'; |
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/** |
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* We're using the free ip2c service to lookup IP 2 country. |
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*/ |
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const GEOCODE_SERVICE_URL = 'http://ip2c.org/'; |
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protected $soapClient; |
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/** |
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* All available tax rules. |
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* |
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* @var array |
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*/ |
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protected $taxRules = [ |
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'AT' => 0.20, |
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'BE' => 0.21, |
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'BG' => 0.20, |
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'CY' => 0.19, |
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'CZ' => 0.21, |
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'DE' => 0.19, |
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'DK' => 0.25, |
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'EE' => 0.20, |
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'EL' => 0.23, |
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'ES' => 0.21, |
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'FI' => 0.24, |
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'FR' => 0.20, |
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'GB' => 0.20, |
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'GR' => 0.23, |
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'IE' => 0.23, |
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'IT' => 0.22, |
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'HR' => 0.25, |
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'HU' => 0.27, |
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'LV' => 0.21, |
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'LT' => 0.21, |
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'LU' => 0.17, |
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'MT' => 0.18, |
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'NL' => 0.21, |
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'NO' => 0.25, |
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'PL' => 0.23, |
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'PT' => 0.23, |
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'RO' => 0.20, |
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'SE' => 0.25, |
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'SK' => 0.20, |
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'SI' => 0.22, |
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]; |
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/** |
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* @var float |
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*/ |
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protected $netPrice = 0.0; |
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/** |
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* @var string |
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*/ |
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protected $countryCode; |
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/** |
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* @var Repository |
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*/ |
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protected $config; |
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/** |
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* @var float |
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*/ |
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protected $taxValue = 0; |
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/** |
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* @var float |
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*/ |
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protected $taxRate = 0; |
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/** |
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* The calculate net + tax value. |
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* |
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* @var float |
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*/ |
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protected $value = 0; |
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/** |
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* @var bool |
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*/ |
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protected $company = false; |
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/** |
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* @var string |
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*/ |
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protected $businessCountryCode; |
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/** |
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* @param \Illuminate\Contracts\Config\Repository |
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*/ |
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public function __construct($config = null) |
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{ |
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$this->config = $config; |
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$businessCountryKey = 'vat_calculator.business_country_code'; |
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if (isset($this->config) && $this->config->has($businessCountryKey)) { |
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$this->setBusinessCountryCode($this->config->get($businessCountryKey, '')); |
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} |
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$this->soapClient = new SoapClient(self::VAT_SERVICE_URL); |
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} |
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/** |
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* Finds the client IP address. |
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* |
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* @return mixed |
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*/ |
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private function getClientIP() |
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{ |
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if (isset($_SERVER[ 'HTTP_X_FORWARDED_FOR' ]) && $_SERVER[ 'HTTP_X_FORWARDED_FOR' ]) { |
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$clientIpAddress = $_SERVER[ 'HTTP_X_FORWARDED_FOR' ]; |
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} elseif (isset($_SERVER[ 'REMOTE_ADDR' ]) && $_SERVER[ 'REMOTE_ADDR' ]) { |
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$clientIpAddress = $_SERVER[ 'REMOTE_ADDR' ]; |
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} else { |
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$clientIpAddress = ''; |
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} |
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return $clientIpAddress; |
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} |
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/** |
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* Returns the ISO 3166-1 alpha-2 two letter |
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* country code for the client IP. If the |
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* IP can't be resolved it returns false. |
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* |
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* @return bool|string |
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*/ |
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public function getIPBasedCountry() |
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{ |
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$ip = $this->getClientIP(); |
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$url = self::GEOCODE_SERVICE_URL.$ip; |
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$result = file_get_contents($url); |
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switch ($result[ 0 ]) { |
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case '1': |
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$data = explode(';', $result); |
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return $data[ 1 ]; |
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break; |
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default: |
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return false; |
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} |
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} |
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/** |
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* Calculate the VAT based on the net price, country code and indication if the |
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* customer is a company or not. |
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* |
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* @param int|float $netPrice The net price to use for the calculation |
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* @param null|string $countryCode The country code to use for the rate lookup |
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* @param null|bool $company |
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* |
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* @return float |
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*/ |
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public function calculate($netPrice, $countryCode = null, $company = null) |
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{ |
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if ($countryCode) { |
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$this->setCountryCode($countryCode); |
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} |
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if (!is_null($company) && $company !== $this->isCompany()) { |
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$this->setCompany($company); |
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} |
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$this->netPrice = floatval($netPrice); |
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$this->taxRate = $this->getTaxRateForCountry($this->getCountryCode(), $this->isCompany()); |
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$this->taxValue = $this->taxRate * $this->netPrice; |
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$this->value = $this->netPrice + $this->taxValue; |
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return $this->value; |
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} |
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/** |
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* @return float |
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*/ |
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public function getNetPrice() |
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{ |
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return $this->netPrice; |
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} |
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/** |
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* @return string |
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*/ |
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public function getCountryCode() |
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{ |
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return strtoupper($this->countryCode); |
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} |
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/** |
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* @param mixed $countryCode |
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*/ |
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public function setCountryCode($countryCode) |
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{ |
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$this->countryCode = $countryCode; |
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} |
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/** |
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* @return float |
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*/ |
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public function getTaxRate() |
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{ |
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return $this->taxRate; |
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} |
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/** |
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* @return bool |
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*/ |
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public function isCompany() |
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{ |
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return $this->company; |
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} |
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/** |
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* @param bool $company |
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*/ |
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public function setCompany($company) |
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{ |
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$this->company = $company; |
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} |
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/** |
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* @param string $businessCountryCode |
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*/ |
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public function setBusinessCountryCode($businessCountryCode) |
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{ |
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$this->businessCountryCode = $businessCountryCode; |
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} |
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/** |
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* Returns the tax rate for the given country. |
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* |
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* @param string $countryCode |
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* @param bool|false $company |
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* |
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* @return float |
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*/ |
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public function getTaxRateForCountry($countryCode, $company = false) |
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{ |
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if ($company && strtoupper($countryCode) !== strtoupper($this->businessCountryCode)) { |
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return 0; |
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} |
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$taxKey = 'vat_calculator.rules.'.strtoupper($countryCode); |
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if (isset($this->config) && $this->config->has($taxKey)) { |
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return $this->config->get($taxKey, 0); |
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} |
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return isset($this->taxRules[ strtoupper($countryCode) ]) ? $this->taxRules[ strtoupper($countryCode) ] : 0; |
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} |
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/** |
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* @return float |
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*/ |
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public function getTaxValue() |
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{ |
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return $this->taxValue; |
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} |
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/** |
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* @param $vatNumber |
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* |
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* @throws VATCheckUnavailableException |
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* |
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* @return bool |
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*/ |
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public function isValidVATNumber($vatNumber) |
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{ |
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$vatNumber = str_replace([' ', '-', '.', ','], '', trim($vatNumber)); |
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$countryCode = substr($vatNumber, 0, 2); |
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$vatNumber = substr($vatNumber, 2); |
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$client = $this->soapClient; |
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if ($client) { |
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try { |
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$result = $client->checkVat([ |
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'countryCode' => $countryCode, |
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'vatNumber' => $vatNumber, |
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]); |
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return $result->valid; |
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} catch (\SoapFault $e) { |
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return false; |
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} |
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} |
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throw new VATCheckUnavailableException('The VAT check service is currently unavailable. Please try again later.'); |
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} |
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/** |
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* @param SoapClient $soapClient |
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*/ |
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public function setSoapClient($soapClient) |
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{ |
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$this->soapClient = $soapClient; |
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} |
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} |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: